SkinCeuticals Hyaluronic Acid Intensifier (H.A.) Versus Dear, Klairs Fundamental Watery Oil Drop
Updated on June 26, 2025
Overview
What they are
These products are both reef safe serums. They have a total of 7 ingredients in common
Cool Features
They both contain hyaluronic acid and Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any parabens or sulfates
What's Inside
They both contain fragrances
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
SkinCeuticals Hyaluronic Acid Intensifier (H.A.) 35 ingredients
Dear, Klairs Fundamental Watery Oil Drop 34 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
SkinCeuticals Hyaluronic Acid Intensifier (H.A.) 35 ingredients
Dear, Klairs Fundamental Watery Oil Drop 34 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningCyclohexasiloxane
Emollient
Glycerin
Humectant
Alcohol Denat.
Antimicrobial
Hydroxypropyl Tetrahydropyrantriol
Skin ConditioningPropylene Glycol
Humectant
Dipotassium Glycyrrhizate
Humectant
Polysilicone-11
Polymethylsilsesquioxane
Sodium Hyaluronate
Humectant
Dimethicone
Emollient
Tocopherol
Antioxidant
Phenoxyethanol
Preservative
Capryloyl Salicylic Acid
Exfoliating
Octyldodecanol
EmollientBis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone
Emollient
PEG-20 Methyl Glucose Sesquistearate
Emulsifying
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingCaprylyl Glycol
EmollientXanthan Gum
EmulsifyingDextrin
AbsorbentOryza Sativa Extract
Absorbent
Disodium EDTA
Caprylic/Capric Triglyceride
Masking
Sodium Hydroxide
BufferingAdenosine
Skin Conditioning
Citrus Nobilis Peel Oil
Masking
Limonene
Perfuming
T-Butyl Alcohol
Perfuming
Cellulose Acetate Butyrate
Polyphosphorylcholine Glycol Acrylate
Polyvinyl Alcohol
Sodium Chloride
Masking
Butylene Glycol
Humectant
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Water, Cyclohexasiloxane, Glycerin, Alcohol Denat., Hydroxypropyl Tetrahydropyrantriol, Propylene Glycol, Dipotassium Glycyrrhizate, Polysilicone-11, Polymethylsilsesquioxane, Sodium Hyaluronate, Dimethicone, Tocopherol, Phenoxyethanol, Capryloyl Salicylic Acid, Octyldodecanol, Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone, PEG-20 Methyl Glucose Sesquistearate, Ammonium Polyacryloyldimethyl Taurate, Caprylyl Glycol, Xanthan Gum, Dextrin, Oryza Sativa Extract, Disodium EDTA, Caprylic/Capric Triglyceride, Sodium Hydroxide, Adenosine, Citrus Nobilis Peel Oil, Limonene, T-Butyl Alcohol, Cellulose Acetate Butyrate, Polyphosphorylcholine Glycol Acrylate, Polyvinyl Alcohol, Sodium Chloride, Butylene Glycol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Camellia Sinensis Leaf Water
Masking
Bifida Ferment Extract
HumectantOryza Sativa Extract
Absorbent
Dipropylene Glycol
MaskingBetaine
Humectant
1,2-Hexanediol
Skin Conditioning
Aspergillus/Rice Ferment Extract
HumectantCamellia Sinensis Leaf Extract
Antimicrobial
Sorbitol
Humectant
Sorbitan Sesquioleate
Emulsifying
Ethylhexylglycerin
Skin ConditioningArginine
Masking
Xanthan Gum
EmulsifyingHydroxyethylcellulose
Emulsion StabilisingSodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingIsohexadecane
EmollientDipotassium Glycyrrhizate
Humectant
Sodium Hyaluronate
Humectant
Carbomer
Emulsion StabilisingAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingTocopheryl Acetate
Antioxidant
Laminaria Japonica Extract
Skin Protecting
Polysorbate 80
Emulsifying
Sorbitan Oleate
Emulsifying
Hydrogenated Lecithin
Emulsifying
Ceramide NP
Skin Conditioning
Disodium Phosphate
BufferingPolysorbate 60
Emulsifying
Sodium Phosphate
BufferingCopper Tripeptide-1
Skin Conditioning
Acetyl Hexapeptide-8
Humectant
Water, Glycerin, Butylene Glycol, Camellia Sinensis Leaf Water, Bifida Ferment Extract, Oryza Sativa Extract, Dipropylene Glycol, Betaine, 1,2-Hexanediol, Aspergillus/Rice Ferment Extract, Camellia Sinensis Leaf Extract, Sorbitol, Sorbitan Sesquioleate, Ethylhexylglycerin, Arginine, Xanthan Gum, Hydroxyethylcellulose, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Isohexadecane, Dipotassium Glycyrrhizate, Sodium Hyaluronate, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tocopheryl Acetate, Laminaria Japonica Extract, Polysorbate 80, Sorbitan Oleate, Hydrogenated Lecithin, Ceramide NP, Disodium Phosphate, Polysorbate 60, Sodium Phosphate, Copper Tripeptide-1, Acetyl Hexapeptide-8
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolDipotassium Glycyrrhizate comes from licorice root.
Extracts of licorice have demonstrated to have antibacterial, anti‐inflammatory, antiviral, antioxidant properties.
One component, glabridin, has extra potent antioxidant and soothing properties. It has also been found to block pigmentation from UVB rays in guinea pigs.
Licorice Root also contains a flavonoid. Flavonoids are a natural substance from in plants. Flavonoids also have antioxidant properties.
Another component, glycyrrhizin, has been found to have anti-inflammatory and antimicrobial benefits. This may make licorice root extract effective at treating acne. However, more research is needed to support this.
Liquiritin is one of the flavone compounds found in licorice. It has been found to help lighten skin by preventing tyrosinase from reacting with tyrosine. When the two react, protein is converted to melanin. Melanin is the substance in your body that gives your features pigmentation.
Licorice root is native to Southern Europe and Asia. It has been used in traditional Chinese medicine to help with respiratory issues.
Learn more about Dipotassium GlycyrrhizateGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinOryza Sativa Extract comes from the rice grain, Oryza sativa. Rice extract has wound healing, antioxidant, anti-inflammatory, and hydrating properties.
Rice grains contain numerous antioxidants which may help with anti-aging, such as vitamin E. Antioxidants help stabilize free-radical molecules. Unstable free-radical molecules may damage your skin cells and accelerate signs of aging.
A study from 2002 found rice to help increase the rate of wound healing. The same study found an improvement of skin barrier function in the patients after taking rice baths.
Numerous in-vitro studies have found rice water to help decrease sun damage by increasing collagen production and inhibiting the process of tyrosinase.
Long story short- tyrosinase is an enzyme that controls melanin production. Our bodies start producing melanin (AKA tanning) when exposed to UV radiation to protect against damage. Rice water is found to partially block this process.
Though more research is needed on rice's ability to help with UV protection, recent studies seem promising.
Wondering why rice is hydrating? The protein in rice have emollient properties. Emollients create a barrier on the skin to trap moisture in, keeping your skin moisturized.
Some rice extract may have mildly-exfoliating properties. These are mainly limited to Oryza Sativa (Rice) Bran and Oryza Sativa (Rice) Germ Powder.
This rice was first cultivated in China over 10,000 years ago. Many cultures throughout Asia have used rice water on skin and hair for centuries.
Learn more about Oryza Sativa ExtractSodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronateWater. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterXanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumIngredient Ratings
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When to use
SkinCeuticals Hyaluronic Acid Intensifier (H.A.) 35 ingredients
Dear, Klairs Fundamental Watery Oil Drop 34 ingredients
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